STOCHASTIC RESONANCE AND NONLINEAR RESPONSE IN A DISSIPATIVE QUANTUM 2-STATE SYSTEM

Authors
PAREEK TP MAHATO MC JAYANNAVAR AM
Citation
Tp. Pareek et al., STOCHASTIC RESONANCE AND NONLINEAR RESPONSE IN A DISSIPATIVE QUANTUM 2-STATE SYSTEM, Physical review. B, Condensed matter, 55(15), 1997, pp. 9318-9321
Citations number
21
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
55
Issue
15
Year of publication
1997
Pages
9318 - 9321
Database
ISI
SICI code
0163-1829(1997)55:15<9318:SRANRI>2.0.ZU;2-M
Abstract
We study the dynamics of a dissipative two-level system, driven by a m onochromatic ac field, starting from the usual spin-boson Hamiltonian. The quantum Langevin equations for the spin variables are obtained. T he amplitude of the coherent oscillations in the average position of t he particle is studied in the high-temperature limit. The system exhib its quantum stochastic resonance in qualitative agreement with earlier numerical results.